Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Synthesis and Characterization of Hybrid Materials Derived from Conjugated Copolymers and Reduced Graphene Oxide
Δημιουργός/Συγγραφέας:	Lazanas, Alexandros Ch Katsouras, Athanasios Spanos, Michael Manesi, Gkreti-Maria Moutsios, Ioannis Vashurkin, Dmitry V Moschovas, Dimitrios Gioti, Christina [EL] Καρακασσίδης, Μιχαήλ Α.[EN] Karakassides, Michael A. [EL] Γρηγορίου, Βασίλης Γ.[EN] Gregoriou, Vasilis G. Ivanov, Dimitri A [EL] Χώχος, Χρήστος[EN] Chochos, Christos Avgeropoulos, Apostolos
Ημερομηνία:	2022-12-03
Γλώσσα:	Αγγλικά
ISSN:	2073-4360
DOI:	10.3390/polym14235292
Άλλο:	36501686
Περίληψη:	In this study the preparation of hybrid materials based on reduced graphene oxide (rGO) and conjugated copolymers is reported. By tuning the number and arrangement of thiophenes in the main chain (indacenothiophene or indacenothienothiophene) and the nature of the polymer acceptor (difluoro benzothiadiazole or diketopyrrolopyrrole) semiconducting copolymers were synthesized through Stille aromatic coupling and characterized to determine their molecular characteristics. The graphene oxide was synthesized using the Staudenmaier method and was further modified to reduced graphene oxide prior to structural characterization. Various mixtures with different rGO quantities and conjugated copolymers were prepared to determine the optoelectronic, thermal and morphological properties. An increase in the maximum absorbance ranging from 3 to 6 nm for all hybrid materials irrespective of the rGO concentration, when compared to the pristine conjugated copolymers, was estimated through the UV-Vis spectroscopy indicating a differentiation on the optical properties. Through voltammetric experiments the oxidation and reduction potentials were determined and the calculated HOMO and LUMO levels revealed a decrease on the electrochemical energy gap for low rGO concentrations. The study indicates the potential of the hybrid materials consisting of graphene oxide and high band gap conjugated copolymers for applications related to organic solar cells.
Τίτλος πηγής δημοσίευσης:	Polymers
Τόμος/Κεφάλαιο:	14
Τεύχος:	23
Θεματική Κατηγορία:	[EL] Φασματοσκοπία[EN] Spectroscopy [EL] Νανοτεχνολογία[EN] Nanotechnology [EL] Χημική τεχνολογία[EN] Chemical technolgy [EL] Χημικά προϊόντα: Παραγωγή, χρήση κλπ[EN] Chemicals: Manufacture, use etc.
Λέξεις-Κλειδιά:	HOMO LUMO Conjugated copolymers Cyclic voltammetry Hybrid materials Indacenothienothiophene Indacenothiophene rGO
EU Grant identifier:	075-15-2022-1105
Κάτοχος πνευματικών δικαιωμάτων:	© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Όροι και προϋποθέσεις δικαιωμάτων:	This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://www.mdpi.com/2073-4360/14/23/5292
Εμφανίζεται στις συλλογές:	Ινστιτούτο Χημικής Βιολογίας - Επιστημονικό έργο